Welder World Blog

Posts Tagged ‘gas metal arc’

• MIG welder handles a wide variety of solid, mild steel or stainless steel, flux cored and aluminum wires
• Operates from 115-volt standard household current;
• Features 4 output voltage settings with wire feed tracking and a purge setting
• Comes ready to use
• Includes a built-in contactor to make wire electrically “cold” when not welding

Product Description
Rugged and portable, the Handler® 140 operates off 110 volt current. Comes ready to weld with or without shielding gas using .030 flux cored wire. For greater versatility, upgrade with the optional MIG Kit. FEATURES: ? Welds 20 gauge up to 1/4″ steel ? 25 -140 amperage output range ? Includes 10′ work cable with clamp and extra 0.030″ contact tips ? Approx. shipping weight: 66 lbs.Amazon.com Product Description
The Handler 140 from Hobart comes ready to weld with or without shielding glass, and it expertly handles a wide variety of solid, mild steel or stainless steel, flux cored and aluminum wires. This handy MIG welder operates from 115-volt standard household current and features four output voltage settings with wire feed tracking and a purge setting, both of which provide quick and easy adjustment for different materials and thickness. The Handler 140 welds 24 gauge up to .25 inch in steel without burning through, and includes both a built-in contactor to make wire electrically “cold” when not welding and self-resetting thermal overload protection for optimum safety.

The proven built-in wire feeder with quick-release drive roll lever ensures reliable operation, and makes it easy to switch between .023 and .025 inches and .030 to .035 inches. This device also offers easy access to polarity changeover, which includes storage holes for spare tips.

Hobart 500500 Handler 140 115-Volt 25-to-140 Amp Gas/Metal/Arc Single-Phase Wire Welding Package

Product Description
Welding Technology Fundamentals is written for secondary and postsecondary students, apprentices, journeymen, and individuals who wish to learn to weld. This book covers the equipment and techniques associated with the welding and cutting processes most widely used in industry today. These processes include: oxyfuel gas welding and cutting, shielded metal arc welding, gas metal arc welding, flux cored arc welding, gas tungsten arc welding, and resistance welding. Technical information regarding weld inspection and testing, welder qualification, drawing interpretation, and welding symbols is also included. The text is organized into eight sections, which can be studied independently or in sequence. Written in easy-to-understand format, this text is extensively illustrated and includes many tables and charts for selecting the variables required to make a good weld. Correlated with the QC-10 Standard.

Welding Technology Fundamentals

Hello,

Today we go over some tips if you are interested in buying a welder.
What to look for, what to think about, what will matter to you when
you get it home.

What to Look for When Buying a Welder
There are so many welders on the market it can be confusing to the
average person as to which one to buy. For the most part, what you
buy will be determined by the kind of project you will be doing
most of the time.

If you are new to welding your first welder will probably be a
stick or a wire feed welder because they are the easiest to use. A
wire welder sometimes is easier because you will use a continuous
feed into your gun as you continue to weld. In a stick welder,
you’ll need to change the electrode or “stick” periodically as it
runs out. Also, the wire welder will be easier to use, give you
better welds from the beginning and you can learn it relatively
quicker than stick welding.

The next thing you will have to decide is the type of welding you
will do most of the time. Generally there are two types: Either Gas
Metal Arc Welding (MIG) or flux cored wire welding. These two are
very different in their delivery so it is important to know the
difference between the two. When you are going to be doing welding
for small repairs, you probably will want to get an MIG welder
because it is very versatile in the types of materials it can weld.

If you are going to use it in your garage at home or the same
location, the MIG welder will be perfect. It is not very portable
because you have to also use a container of shielding gas with it.
If you are going to do a lot of outside welding, then you will
probably want to use the flux cored wired welding. Since flux is
already in your machine, you won’t need a shielding gas and this
makes it more portable.  The only problem is that with this type of
welder, you can only weld one type of steel.

Another idea is to go online and check out the many welding forums
and ask about the various welders. You can read archives and ask
specific questions about your needs, and receive guidance from
other welders.

If you buy your welder through an industrial products manufacture
you may find a welder that does both.

When you buy your welder it is also important to make sure you
purchase the safety equipment need. For some you will need a full
safety helmet and for others you will need at least safety goggles.
However, you can be exposed to fumes, arcs that go haywire,
electric shock and other hazards so you will want to make sure that
you have what you need.

Other ideas for getting the welder you need include renting or
buying used. In some situations either of these options can be a
good idea. If you are only going to use a welder occasionally, you
might consider renting one. If you are going to purchase a used
one, it is a good idea to go with upper end purchases because they
are made better than the cheaper models.

___________________________________________________________________
___________________________________________________________________

Here is a link to a Web Page that covers this email:
http://www.WelderWorld.com

Have a good one,
Ivan Irons
WelderWorld.com

P.S.
There is more…If you sign up as a member of Welder World Community, you
will get special access to 2 Free eBooks on the site. The eBooks
are about Welding Basics.  Here is the best part, becoming a member is Free!

Wait…The Welding Basics eBooks are Free!
Yes!

What do I get out of it you ask?  A bunch of like-minded Welders and Metal Working Friends
around the world!

Sign Up Now to get all these Welding Benefits!
http://www.welderworld.com/index.php?option=com_comprofiler&task=registers

Hello,

MIG Welding is the other main type of welding done today.  Today we
explore it in depth.

MIG(GMAW) or Wire Feed Welding Process Overview
This process is called by many names and it basically is a welding
process that uses an arc to heat metal that needs to be joined. The
welder uses a continuous feed filler metal (a consumable) electrode
and this is used on the work-piece. This type of welding also must
use a shielding that is provided by a gas or a mixture of gasses.

This type of welding is also called short circuit transfer. In the
MIG process, when the wire actually touches the metal to be
connected, it lets go of the metal that does the welding. This
makes sure that metal doesn’t transfer across an arc so there is no
puddling.

Also known as gas metal arc welding, the MIG(GMAW) process uses a
metal gun to provide this service instead of a torch so that you
get a direct current going to the metal. You can use both constant
current and alternating current systems to also produce this method
of welding.

GMAW uses four ways to transfer metal. These are:

Globular — this method is difficult and used the least because it
has a tendency to spatter because the gun will move to a high heat
without warning. This makes the welding surface come out with
flaws.  This method uses carbon dioxide so the electrode tends to
produce a ball of melted metal that cases irregular shapes that are
bigger than the electrode. They then drop and falls onto the piece
you are working on which causes a spatter. This is difficult to
control as you would imagine.

Short circuiting — this uses a smaller current than the globular
method but it still uses carbon dioxide. Because of the lower
current you can actually weld thinner metals together with this
method. This method is similar to the globular method because drops
of melted metal from the electrode still forms, but it causes the
electrode to short circuit instead of the drops falling on the
work. This closes off the arc but comes back again because the
surface tension pulls the metal goblet from the tip.

Spray — this was the first method for transfer used with GMAW and
used to weld aluminium and stainless steel. The difference with
this process is that the electrode metal passes through an electric
arc that is stable and goes all the way to the workplace. This
stops spattering and you get a weld finish that is higher quality
than in other methods. You also will watch as the current and
voltage increases so you get small, vaporized steam droplets
instead of large globules.

Pulse spray — this last one is a newer way of doing this type of
welding that uses a continuous current that pulses and melts the
filler wire. In each pulse a small droplet of metal will fall.

This also allows the welder to use a lower current. The welder gets
a more stable arc and this stops spatter and the short circuiting
process. Because this process is slower, argon gas is used instead
of carbon dioxide as the shielding gas.

___________________________________________________________________
___________________________________________________________________

Here is a link to a Web Page that covers this email:
http://www.welderworld.com/mig-welding-general/2

Have a good one,
Ivan Irons
WelderWorld.com

P.S.
There is more…If you sign up as a member of Welder World Community, you
will get special access to 2 Free eBooks on the site. The eBooks
are about Welding Basics.  Here is the best part, becoming a member is Free!

Wait…The Welding Basics eBooks are Free?
Yes!

What do I get out of it you ask?  A bunch of like-minded Welders and Metal Working Friends
around the world!

Sign Up Now to get all these Welding Benefits!
http://www.welderworld.com/index.php?option=com_comprofiler&task=registers

Product Description
Welding Skills provides comprehensive coverage of welding safety, the major welding and cutting processes with skill-building exercises, essential metallurgy, welding symbols, weld evaluation and testing, and much more. All content is clearly presented in a heavily illustrated format for easy comprehension. American Welding Society (AWS) terms and definitions are used throughout the textbook.

The fourth edition features an expanded chapter on welding safety, a new chapter, Dissimilar Metal Welding, and the integration of AWS SENSE recommended content where appropriate throughout the textbook. Each welding process module has been updated to include the latest equipment, simplified explanations of operating theory, and helpful charts to assist with electrode and shielding gas selection.

The new edition also features expanded coverage of the latest welding equipment, procedures, and materials and Gas Metal Arc Welding, Gas Tungsten Arc Welding, and Flux Cored Arc Welding.

Welding Skills